<table cellspacing="0" cellpadding="0" border="0" style="width:100%">
<tr>
    <td style="width:50%">Column1</td>
    <td style="width:50%">Column2</td>
</tr>
<tr>
    <td style="width:50%">Column1</td>
    <td style="width:50%">Column2</td>
</tr>
</table>